Add support for filters on list command

Possible filters are :
 - advisory type
 - distribution release
 - package name
 - CVE
 - media

3 files changed, 39 insertions, 7 deletions

diff --git a/NEWS b/NEWS
index 1a67fee..1f08b35 100644
--- a/NEWS
+++ b/NEWS
@@ -1,5 +1,6 @@
 - don't save status for unpublished advisories
 - fix display of publication date
+- list command now accept filters to filter results
 
 Version 0.8
 
diff --git a/lib/MGA/Advisories.pm b/lib/MGA/Advisories.pm
index 0115438..9ebe35e 100644
--- a/lib/MGA/Advisories.pm
+++ b/lib/MGA/Advisories.pm
@@ -328,9 +328,18 @@ sub newadv {
 }
 
 sub listadv {
-    my ($advdb) = @_;
-    print map { "$_ . $advdb->{advisories}{$_}{subject}\n" } 
-        adv_sort($advdb, keys %{$advdb->{advisories}});
+    my ($advdb, @filter) = @_;
+    my @advlist = keys %{$advdb->{advisories}};
+    foreach my $f (@filter) {
+        my $l = $advdb->{by_type}{$f} || $advdb->{by_cve}{$f}
+                || $advdb->{by_rel}{$f} || $advdb->{by_media}{$f}
+                || $advdb->{by_src}{$f} || [];
+        my %z;
+        @z{@$l} = (1) x @$l;
+        @advlist = grep { $z{$_} } @advlist;
+    }
+    print map { "$_ . $advdb->{advisories}{$_}{subject}\n" }
+        adv_sort($advdb, @advlist);
 }
 
 sub showadv {
diff --git a/mgaadv b/mgaadv
index afbe8dd..e2ed080 100755
--- a/mgaadv
+++ b/mgaadv
@@ -21,9 +21,30 @@ END
         run   => \&listadv,
         descr => 'List advisories',
         usage => <<END,
-$0 list
+$0 list [filter...]
+
+Print the list of published advisories. Optionally you can filter the
+list with one or more filters. Possible filters are :
+- advisory type
+- distribution release
+- package name
+- CVE
+- media
+
+Examples :
+ 
+ list advisories for package wireshark :
+ \$ mgaadv list wireshark
+
+ list security advisories for package wireshark :
+ \$ mgaadv list security wireshark
+
+ list advisories for CVE CVE-2013-3560
+ \$ mgaadv list CVE-2013-3560
+
+ list advisories for Mageia 2 in media tainted :
+ \$ mgaadv list 2 tainted
 
-Print the list of published advisories
 END
     },
     mksite => {
@@ -147,10 +168,11 @@ sub publish {
 }
 
 sub listadv {
-    usageexit('usage', $_[0]) unless @_ == 1;
+    shift;
     my %advdb;
     $advdb{advisories} = MGA::Advisories::get_advisories();
-    MGA::Advisories::listadv(\%advdb);
+    MGA::Advisories::sort_advisories(\%advdb) if @_;
+    MGA::Advisories::listadv(\%advdb, @_);
 }
 
 sub showadv {